Research Paper

A new variety of the mycoheterotrophic orchid Lecanorchis thalassica from Xieng Khouang Province, Laos

Kenji Suetsugu, Tatsuki Nishioka, Shingo Kaida, Tian-Chuan Hsu, Shinchiro Sawa, Yasuyuki Kosaka, Phetlasy Souladeth, Lamphoune Xayvongsa, Makoto Kato

Published on: 24 October 2018

Page: 351 - 355

DOI: 10.6165/tai.2018.63.351

  • BibTeX
    •
  • EndNote
    •
  • RIS
    •

    Abstract

    Here, we describe a new variety of the mycoheterotrophic genus Lecanorchis (Orchidaceae), namely, L. thalassica T.P. Lin var. laoensis Suetsugu & T.C. Hsu, which was discovered during a botanical survey in Xieng Khouang Province, Laos. The new variety resembles Lecanorchis thalassica var. thalassica from Taiwan, owing to its relatively large tepals, tri-lobed lip, loosely flowered rachis, and obtuse sepals and petals, but is distinguished by a lip midlobe that is only centrally hairy and by additional projections below the column wings. An illustration and rDNA internal transcribed spacer (ITS) region (i.e., DNA barcode) sequence of the new variety from Laos are provided.

    Keyword: DNA barcoding, Laos, Lecanorchis, Mycoheterotroph, New locality, Orchidaceae

    Literature Cited

    Averyanov, L.V. 2005. New orchids from Vietnam. Rheedea 15: 83-101.

    Averyanov, L.V. 2011. The orchids of Vietnam illustrated survey, part 3. Turczaninowia 14: 15-100.

    Averyanov, L.V. 2013. New and rare orchids (Orchidaceae) in the flora of Cambodia and Laos. Turczaninowia 16(4): 26-46.
    DOI: 10.14258/turczaninowia.16.4.7View Article Google Scholar

    Douzery, E.J., A.M. Pridgeon, P. Kores, H. Linder, H. Kurzweil and M.W. Chase. 1999. Molecular phylogenetics of Diseae (Orchidaceae): a contribution from nuclear ribosomal ITS sequences. Am. J. Bot. 86(6): 887-899.
    DOI: 10.2307/2656709View Article Google Scholar

    Hashimoto, T. 1989. Taxonomic miscellanies of orchidaceous plants (4). Annals of the Tsukuba Botanical Garden 8: 1-9.

    Hashimoto, T. 1990. A taxonomic review of the Japanese Lecanorchis (Orchidaceae). Annals of the Tsukuba Botanical Garden 9: 1-40.

    Lin, T.P. 1987. Native Orchids of Taiwan, vol. 3. Southern Materials Center, Taipei, Taiwan. 354pp.

    Pearce, N. and P. Cribb. 1999. Notes relating to the flora of Bhutan: XXXVII. New species and records of Orchidaceae from Bhutan and India (Sikkim). Edinburgh J. Bot. 56(2): 273-284.
    DOI: 10.1017/S096042860000113XView Article Google Scholar

    Pridgeon, A.M., P.J. Cribb, M.W. Chase and F.N. Rasmussen. 2003. Genera Orchidacearum 3. Orchidoideae (part 2), Vanilloideae. Oxford University Press, Oxford, UK. 358pp.

    Seidenfaden, G. 1978. Orchid Genera in Thailand VI. Neottioideae Lindl. Dansk Bot.Arkiv 32: 1-195.

    Suddee, S. and H.?. Pedersen. 2011. A new species of Lecanorchis (Orchidaceae) from Thailand. Taiwania 56(1): 37-41.
    DOI: 10.6731/TPCC_proceedings.003b-002-R1-00009506View Article Google Scholar

    Suetsugu, K. and H. Fukunaga. 2016. Lecanorchis tabugawaensis (Orchidaceae, Vanilloideae), a new mycoheterotrophic plant from Yakushima Island, Japan. Phytokeys 73: 125-135.
    DOI: 10.3897/phytokeys.73.10019View Article Google Scholar

    Suetsugu, K., T.C. Hsu, H. Fukunaga and S. Sawa. 2016. Epitypification, emendation and synonymy of Lecanorchis taiwaniana (Vanilleae, Vanilloideae, Orchidaceae). Phytotaxa 265(2): 157-163.
    DOI: 10.11646/phytotaxa.265.2.8View Article Google Scholar

    Suetsugu, K., T.C. Hsu and H. Fukunaga. 2017a. Lectotypification of Lecanorchis ohwii (Vanilleae, vanilloideae, orchidaceae) with discussions of its taxonomic identity. Phytotaxa 309(3): 259-264.
    DOI: 10.11646/phytotaxa.309.3.7View Article Google Scholar

    Suetsugu, K., T.C. Hsu and H. Fukunaga. 2017b. The identity of Lecanorchis flavicans and L. flavicans var. acutiloba (Vanilleae, Vanilloideae, Orchidaceae). Phytotaxa 306(3): 217-222.
    DOI: 10.11646/phytotaxa.306.3.4View Article Google Scholar

    Suetsugu, K., S. Tagane, H. Toyama, P. Chhang and T. Yahara. 2018a. Lecanorchis vietnamica (Orchidaceae), a newly recorded mycoheterotrophic genus and species from Cambodia. Cambodian J. Nat. Hist. 2018: 6-8.

    Suetsugu, K., T. Hsu and H. Fukunaga. 2018b. Neotypification of Lecanorchis purpurea (Orchidaceae, Vanilloideae) with the discussion on the taxonomic identities of L. trachycaula, L. malaccensis, and L. betung–kerihunensis. Phytotaxa 360(2): 145-152.
    DOI: 10.11646/phytotaxa.360.2.6View Article Google Scholar

    Suetsugu, K., P. Souladeth, S. Tagane and T. Yahara. 2018c. First record of the mycoheterotrophic orchid Lecanorchis taiwaniana from Nam Ha National Protected Area, Northern Laos. Acta phytotaxon. geobot. 69: 139-141.

    Suetsugu, K., C. Shimaoka, H. Fukunaga and S. Sawa. 2018d. The taxonomic identity of three varieties of Lecanorchis nigricans (Vanilleae, Vanilloideae, Orchidaceae) in Japan. PhytoKeys 92: 17-35.
    DOI: 10.3897/phytokeys.92.21657View Article Google Scholar

    Suetsugu, K., L.C. Yiing, A. Naiki, S. Tagane, Y. Takeuchi, H. Toyama and T. Yahara. 2018e. Lecanorchis sarawakensis (Orchidaceae, vanilloideae), a new mycoheterotrophic species from sarawak, Borneo. Phytotaxa 338(1): 135-139.
    DOI: 10.11646/phytotaxa.338.1.13View Article Google Scholar

    Szlachetko, D.L. and J. Mytnik. 2000. Lecanorchis seidenfadeni (Orchidaceae, Vanilloideae), a new orchid species from Malaya. Ann. Bot. Fenn. 37: 227-230.

    Szlachetko, D.L. and P. Rutkowski. 2000. Gynostemia orchidalium, I. Acta Bot. Fennica 169: 1-380.